Home / 28,641.83-42,911.91-11,965.16

Finding the Fourth Proportional to 28,641.83, 42,911.91 and 11,965.16

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Solution

The fourth proportional to 28,641.83, 42,911.91 and 11,965.16 is: 17,926.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,641.83 : 42,911.91 = 11,965.16 : x
  2. Step 2: Convert to fraction form
    28,641.83/42,911.91 = 11,965.16/x
  3. Step 3: Cross multiply
    28,641.83x = 42,911.91 × 11,965.16
  4. Step 4: Simplify right side
    28,641.83x = 513,447,869.06
  5. Step 5: Solve for x
    x = 513,447,869.06/28,641.83
  6. Step 6: Final answer
    x = 17,926.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.